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author | Ben Cheng <bccheng@google.com> | 2012-10-01 10:30:31 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2012-10-01 10:30:31 -0700 |
commit | 82bcbebce43f0227f506d75a5b764b6847041bae (patch) | |
tree | fe9f8597b48a430c4daeb5123e3e8eb28e6f9da9 /gcc-4.7/libgfortran/generated/in_pack_i2.c | |
parent | 3c052de3bb16ac53b6b6ed659ec7557eb84c7590 (diff) | |
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Initial check-in of gcc 4.7.2.
Change-Id: I4a2f5a921c21741a0e18bda986d77e5f1bef0365
Diffstat (limited to 'gcc-4.7/libgfortran/generated/in_pack_i2.c')
-rw-r--r-- | gcc-4.7/libgfortran/generated/in_pack_i2.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/gcc-4.7/libgfortran/generated/in_pack_i2.c b/gcc-4.7/libgfortran/generated/in_pack_i2.c new file mode 100644 index 000000000..3c39f8e61 --- /dev/null +++ b/gcc-4.7/libgfortran/generated/in_pack_i2.c @@ -0,0 +1,119 @@ +/* Helper function for repacking arrays. + Copyright 2003, 2006, 2007, 2009 Free Software Foundation, Inc. + Contributed by Paul Brook <paul@nowt.org> + +This file is part of the GNU Fortran 95 runtime library (libgfortran). + +Libgfortran is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public +License as published by the Free Software Foundation; either +version 3 of the License, or (at your option) any later version. + +Libgfortran is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +<http://www.gnu.org/licenses/>. */ + +#include "libgfortran.h" +#include <stdlib.h> +#include <assert.h> + + +#if defined (HAVE_GFC_INTEGER_2) + +/* Allocates a block of memory with internal_malloc if the array needs + repacking. */ + +GFC_INTEGER_2 * +internal_pack_2 (gfc_array_i2 * source) +{ + index_type count[GFC_MAX_DIMENSIONS]; + index_type extent[GFC_MAX_DIMENSIONS]; + index_type stride[GFC_MAX_DIMENSIONS]; + index_type stride0; + index_type dim; + index_type ssize; + const GFC_INTEGER_2 *src; + GFC_INTEGER_2 * restrict dest; + GFC_INTEGER_2 *destptr; + int n; + int packed; + + /* TODO: Investigate how we can figure out if this is a temporary + since the stride=0 thing has been removed from the frontend. */ + + dim = GFC_DESCRIPTOR_RANK (source); + ssize = 1; + packed = 1; + for (n = 0; n < dim; n++) + { + count[n] = 0; + stride[n] = GFC_DESCRIPTOR_STRIDE(source,n); + extent[n] = GFC_DESCRIPTOR_EXTENT(source,n); + if (extent[n] <= 0) + { + /* Do nothing. */ + packed = 1; + break; + } + + if (ssize != stride[n]) + packed = 0; + + ssize *= extent[n]; + } + + if (packed) + return source->data; + + /* Allocate storage for the destination. */ + destptr = (GFC_INTEGER_2 *)internal_malloc_size (ssize * sizeof (GFC_INTEGER_2)); + dest = destptr; + src = source->data; + stride0 = stride[0]; + + + while (src) + { + /* Copy the data. */ + *(dest++) = *src; + /* Advance to the next element. */ + src += stride0; + count[0]++; + /* Advance to the next source element. */ + n = 0; + while (count[n] == extent[n]) + { + /* When we get to the end of a dimension, reset it and increment + the next dimension. */ + count[n] = 0; + /* We could precalculate these products, but this is a less + frequently used path so probably not worth it. */ + src -= stride[n] * extent[n]; + n++; + if (n == dim) + { + src = NULL; + break; + } + else + { + count[n]++; + src += stride[n]; + } + } + } + return destptr; +} + +#endif + |